.box {
    background-image: url(balloons.jpg);
    background-repeat: no-repeat;
    background-size: 100px 10em;
    /* background-size: cover; */
    /* background-size: contain; */
    /* background-position: 20px top; */
    /* background-position: top 20px right 10px; */
    width: 500px;
    height: 350px;
    border: 2px solid black;
  }